The v0.10.0 release build failed in Build Linux after 16 minutes: failed to bundle project: xdg-open binary not found /usr/bin/xdg-open: No such file or directory linuxdeploy embeds xdg-open into the AppImage and aborts the whole bundle when it is absent. deb and rpm had already bundled fine; only AppImage was affected. This is the one failure tonight that building locally could not have caught, and the reason is worth writing down: a developer machine is a desktop and always has xdg-utils, so the AppImage builds there and fails on a minimal server image. The asymmetry is the bug. Every other release defect this evening was found by building locally first; this one needed the runner. xdg-utils, desktop-file-utils and zsync are added together rather than one at a time. Each round trip costs an image rebuild plus a failed release build, and those three are what linuxdeploy commonly reaches for (xdg-open, desktop-file-validate, and zsync for delta updates). Workflows move to jellytau-builder:2026.08.1, built and pushed with all three verified present inside it before this commit. ci-operations.md gains two things learned here: that an apt addition invalidates the layer above the cargo-install steps, so it is a ~20 minute rebuild rather than the ~2 minutes the trailing layer normally gives; and that Tauri's AppImage bundler downloads linuxdeploy, AppRun and two plugin scripts from GitHub during the build, so an AppImage build depends on GitHub being reachable from the runner.

JellyTau
A cross-platform Jellyfin client built with Tauri, SvelteKit, and TypeScript.
Business logic lives in a Rust backend; a UI-rich Svelte frontend handles presentation and talks to it over Tauri's IPC. Targets Linux (libmpv) and Android (ExoPlayer).
Getting Started
This project uses bun as its package manager.
# Activate the Rust environment (fish shell)
source "$HOME/.cargo/env.fish"
# Install dependencies
bun install
# Run in development
bun run tauri dev
# Type-check the frontend
bun run check
# Build for Linux
bun run tauri build
# Build for Android
bun run tauri android build
For the full set of build, test, and Android helper scripts, see scripts/README.md.
Documentation
| Topic | Location |
|---|---|
| Architecture overview & subsystem docs | docs/architecture/ |
| Requirements, traceability & technical debt | docs/requirements.md |
| Build & release process | docs/build/build-release.md |
| Docker builds | docs/build/docker.md |
| Traceability tooling & CI | docs/traceability.md, docs/traceability-ci.md |
| Release checklist | docs/release-checklist.md |
| UX flows | docs/ux-flows.md |
| CI operations (builder image, secrets, runner) | docs/build/ci-operations.md |
Contributing
CONTRIBUTING.md covers the setup, the gates a change has to pass, and the two rules that catch people out (bug fixes start with a failing test; Jellyfin's taxonomy stays in Rust). Please also read the Code of Conduct.
Found a security problem? Do not open an issue — see SECURITY.md.
Verifying a download
Every release publishes SHA256SUMS covering all of its artifacts, plus an SBOM
of what went into the build:
sha256sum -c SHA256SUMS
Desktop builds update themselves from Settings → Updates, verifying each payload against JellyTau's signing key before installing. Android installs are handled by the system installer, so the app links to the releases page instead.
Recommended IDE Setup
VS Code + Svelte + Tauri + rust-analyzer.
License
MIT